Codemotion

About the Company Our client is a global quantum technologies company on a mission to transform the world's networks for the quantum revolution. Built on technology from a leading Singapore research centre, they provide specialized quantum-security solutions to organizations concerned about the security of their communications networks and infrastructure. Their core expertise is using a space-based quantum platform to establish long-distance quantum networks with global reach.

The Role We're looking for highly motivated FPGA engineers to join a team of space quantum pioneers in Singapore. The company is commercializing quantum communications to prepare the world for the quantum future. Think quantum space lasers, entanglement and military-grade secure communications. As part of this mission, they plan to launch a constellation of satellites to enable worldwide entanglement distribution. The earliest application is highly secure delivery of encryption keys for secret communications.

You'll work directly with scientists and engineers to overcome the technical challenges of quantum communication in the real world.

Responsibilities

• Break down requirements in detail, and produce work plans and documentation
• Design, program and test FPGA-based platforms for Quantum Key Distribution (QKD) systems
• Collaborate with domain and technology experts on solutions based on state-of-the-art and cutting-edge R&D
• Prepare user documentation and guides to support the use of QKD hardware
• Present technical content effectively, both internally and to customers
• Help create commercial and research proposals that support the company's work and its partners
• Other related functions as assigned

Qualifications

• Bachelor's degree in electronics engineering with 5 years of working experience, or master's degree in electronics engineering with 2 years of working experience
• Exceptional academic achievements and/or demonstrated passion for technology through extra-curricular activities
• Curiosity about working at the forefront of deep-tech development

Must-Have Technical Skills

• Experience with FPGA hardware and software design (VHDL/Verilog), e.g. FPGA time taggers
• Experience implementing electronics interfaces (I2C, SPI, Ethernet, etc.)
• Experience designing and testing PCB boards, including high-speed signal considerations
• Strong documentation and quality-control discipline

Bonus Skills (experience in any of these is an advantage)

• Quantum communication
• Analogue electronics
• Telecommunications
• Time stamping or TDC
• LIDAR
• Space electronics

Core skill: Solidity and smart contracts development — this is the primary focus of the role and the key selection criterion.

• At least 4 years of commercial development experience
• Deep knowledge of Go and Solidity
• Hands-on experience with blockchain platforms (Ethereum, Solana, Tron, etc.), DeFi and dApp architectures
• Candidates must be able to discuss real projects, system architectures and their own experience in depth during the technical interview

Position Name: Research & Development Engineer (Blockchain / Smart Contracts)
Level: Senior
Headcount: 3 (client stated 2–3 engineers)

Hard skills requirements:

• At least 4 years of experience as a developer
• Solidity and smart contracts development - core skill, primary focus of the role
• Deep knowledge of Go
• Expertise in Web3
• Experience working with blockchain platforms (Ethereum, Solana, Tron, etc.)
• Experience with cryptographic protocols and smart contracts
• Experience with DeFi
• Knowledge of decentralized application (dApps) architectures
• Understanding the specifics of cryptocurrency transactions and smart contracts
• Experience with version control systems (Git)

Nice to Have:

• Rust, JavaScript, Node.js, Python
• Experience with financial operations and high-load systems
• Knowledge of containerization and DevOps infrastructure (Docker, Kubernetes)

Soft skills requirements:

• A passion for problem-solving and finding innovative solutions
• Strong communication — able to discuss real projects, architectures and past experience in technical depth
• Research mindset — comfortable with R&D work on new technologies
• Proactivity and ownership

Responsibilities:

• Develop and implement innovative solutions for the company's products in the blockchain and crypto-processing sector
• Write clean, high-quality, maintainable code
• Integrate new functionalities into existing solutions and system architectures
• Integrate blockchain platforms with the company's existing systems
• Conduct code reviews and ensure code security
• Participate in architectural discussions and develop scalable system architectures
• Work with APIs to interact with crypto-payment gateways and external services
• Analyze system performance, identify bottlenecks, and optimize the system
• Participate in the development of new products and services based on blockchain technologies, including MPC and distributed signing

English: Upper-Intermediate (client's own posting states B1-B2)
Office/Remote: Remote. Full-time preferred through EOY 2026 (part-time 15–20 hrs/week possible); full-time required from 2027
Time zone: EST overlap — team is US-based in Tampa, Florida

MANDATORY — hands-on experience with Odds88  
This is the key selection criterion for this role.

The engineer must be able to build the full sports betting system: Odds88 integration, betting logic, and the bonus system around it.

Requirements

Position Name: SeniorBackend Developer (Nest.js, Typescript), Sports Betting
Level: Senior (only)

Hard skills requirements:

• Hands-on experience with Odds88  (MANDATORY, key requirement)
• At least 6 years of software engineering experience
• TypeScript in production: typing API contracts, safe refactors, avoiding any
• Strong PostgreSQL + SQL: joins, aggregates, pagination patterns, indexing implications, transactions and isolation, row-level locks (SELECT … FOR UPDATE), handling double-submit/double-spend scenarios
• Third-party API integration experience — external feeds, webhooks, retries, idempotency, reconciliation
• Modern backend architecture: microservices, asynchronous communication, distributed systems basics (timeouts, retries, idempotency, backpressure)
• Strong software design knowledge: OOD, FP fundamentals, design patterns, maintainable modular code
• Proficient Git (PRs, reviews, branching, conflict resolution), Docker and CI/CD
• Agile / SCRUM development practices

Position: Senior Full-Stack Engineer — Solana Low-Latency Copy-Trading (Node.js + React)

Level: Senior

Required Hard Skills

• 6+ years of Software Engineering experience
• Strong commercial experience with Node.js
• Strong experience with TypeScript (strict mode)
• Strong experience with React + TypeScript
• Experience with backend frameworks such as Nest.js, Express.js, Koa.js
• Strong understanding of React, including Hooks, Context, rendering behavior, and performance optimization
• Strong experience with state management tools such as Redux, MobX, Zustand, Recoil, or similar
• Strong software design knowledge: OOD, FP, design patterns, SOLID principles
• Practical hands-on experience with AI-assisted development tools such as Claude Code, Cursor, or similar
• Experience building low-latency, high-throughput, highly concurrent systems (real-time processing, hundreds+ of parallel operations)
• Experience working with external APIs and third-party data providers
• Strong understanding of RESTful APIs and GraphQL APIs
• Advanced experience with SQL databases, especially PostgreSQL (transactions, locking, idempotency)
• Experience with database performance optimization, indexing, query optimization, and handling large datasets
• Experience with async / batch processing, scheduled jobs, background workers, queues, retries, throttling, and rate-limit handling
• Hands-on experience with job / message queues such as BullMQ, Redis Streams, Kafka, RabbitMQ, Amazon SQS/SNS, or similar
• Experience with Docker and CI/CD processes
• Experience with AWS or similar cloud platforms (GCP, Azure)
• Experience building systems that require data validation, consistency checks, idempotency, and crash-recovery safeguards
• Understanding of trading, fintech, blockchain, or data-intensive financial systems
• Knowledge of Agile development practices, preferably SCRUM
• Proficient understanding of Git

Required Blockchain / Solana / Copy-Trading Experience

• Solid understanding of Solana internals: transactions, instructions, accounts, blocks/slots, commitment levels (processed / confirmed / finalized), blockhash lifetime, and reorg handling
• Hands-on experience with low-latency Solana execution / trading bots — landing transactions competitively (same-slot / “block-0”), priority fees, and MEV-aware submission
• Experience with real-time Solana data streaming: Yellowstone gRPC (Triton Dragon’s Mouth / Helius LaserStream) and/or shred-level feeds such as Jito ShredStream (awareness of DoubleZero Edge a plus)
• Experience with transaction submission & landing infrastructure: Jito (Block Engine / bundles / tips), Helius Sender, SWQoS (stake-weighted QoS), and specialist senders (0slot / Nozomi / bloXroute)
• Experience with blockchain data / RPC providers such as Helius, Triton, QuickNode, Alchemy, or similar, including multi-provider failover and rate-limit handling
• Familiarity with Pump.fun / PumpSwap: bonding-curve mechanics, AMM pricing, and building instructions from an on-chain IDL
• Understanding of trading metrics: entry/exit, market cap, slippage, hit rate, P&L, and per-position / portfolio risk
• Experience with crypto trading platforms, copy-trading systems, DEX / on-chain execution, or wallet automation
• Experience with secure key management at scale (HD wallet derivation, in-memory signing, secrets isolation) and capital-isolation / fail-safe design
• Experience with trading systems, bots, DeFi or high-throughput financial systems strongly preferred.

Would Be Great

• Experience writing performance-critical services in Rust (a native signing / execution hot-path is on the roadmap)
• Experience running leader-proximate bare-metal / colocation (Frankfurt / Amsterdam) and host/network tuning for latency
• Experience with Jito bundles, durable nonces, and transaction idempotency / reconciliation against chain
• Experience integrating CEX withdrawal APIs (Binance / MEXC / KuCoin) for programmatic funding
• Experience with observability tools such as Prometheus, Grafana, Datadog, Sentry, ELK, OpenTelemetry, or similar
• Experience designing systems with fallback providers, retry logic, throttling, circuit breakers, and API-usage monitoring
• Experience building HFT / MEV / market-making or other latency-sensitive financial systems

Responsibilities

• Build and maintain full-stack features for ARES, a private copy-trading bot for the Pump.fun / Solana ecosystem
• Design and implement the block-0 execution engine: real-time target detection, pre-trade gating, and same-slot buy submission across multiple routes
• Integrate low-latency detection (Yellowstone gRPC / Jito ShredStream) and submission (Helius Sender / Jito bundles / SWQoS / specialist senders) with multi-provider failover
• Build the wallet lifecycle & custody layer: provisioning isolated child-wallet pairs per task, funding, profit skimming, and drain-to-vault — under strict capital isolation
• Implement position & exit management (rule-driven take-profit, sell-after-inactivity, chase-sells) and the per-task kill-switch / risk protection
• Implement idempotency, durable intent, and crash / reorg reconciliation so no trade is ever double-executed at scale
• Build the operator dashboard (React): copy-task configuration, live task & health monitoring, controls (pause / resume / kill), and global safety limits
• Construct Pump.fun bonding-curve buys from the live IDL, with graduation gating and pre-trade safety checks
• Design controlled concurrency, batching, throttling, retries, and rate-limit handling to sustain 1,000+ tasks / ~2,000+ wallets
• Optimize the detect → decide → sign → submit → land path to maximize block-0 landing rate (KPI #1) and uptime / failover (KPI #2)
• Implement secure key management (HD derivation, in-memory signing) and secrets handling; enforce fail-safe defaults and an explicit kill switch on every execution path
• Collaborate with product, engineering, and domain stakeholders on trade-offs across latency, cost, and reliability; participate in architecture discussions
• Write clean, secure, maintainable, well-tested code (unit + e2e); conduct code reviews; maintain documentation; support production readiness
• Monitor system reliability, execution latency and landing rate, provider health, and data quality

English Level

Upper-Intermediate or higher

Position: Senior Full-Stack Engineer — Solana Low-Latency Copy-Trading (Node.js + React)

Level: Senior

Required Hard Skills

• 6+ years of Software Engineering experience
• Strong commercial experience with Node.js
• Strong experience with TypeScript (strict mode)
• Strong experience with React + TypeScript
• Experience with backend frameworks such as Nest.js, Express.js, Koa.js
• Strong understanding of React, including Hooks, Context, rendering behavior, and performance optimization
• Strong experience with state management tools such as Redux, MobX, Zustand, Recoil, or similar
• Strong software design knowledge: OOD, FP, design patterns, SOLID principles
• Practical hands-on experience with AI-assisted development tools such as Claude Code, Cursor, or similar
• Experience building low-latency, high-throughput, highly concurrent systems (real-time processing, hundreds+ of parallel operations)
• Experience working with external APIs and third-party data providers
• Strong understanding of RESTful APIs and GraphQL APIs
• Advanced experience with SQL databases, especially PostgreSQL (transactions, locking, idempotency)
• Experience with database performance optimization, indexing, query optimization, and handling large datasets
• Experience with async / batch processing, scheduled jobs, background workers, queues, retries, throttling, and rate-limit handling
• Hands-on experience with job / message queues such as BullMQ, Redis Streams, Kafka, RabbitMQ, Amazon SQS/SNS, or similar
• Experience with Docker and CI/CD processes
• Experience with AWS or similar cloud platforms (GCP, Azure)
• Experience building systems that require data validation, consistency checks, idempotency, and crash-recovery safeguards
• Understanding of trading, fintech, blockchain, or data-intensive financial systems
• Knowledge of Agile development practices, preferably SCRUM
• Proficient understanding of Git

Required Blockchain / Solana / Copy-Trading Experience

• Solid understanding of Solana internals: transactions, instructions, accounts, blocks/slots, commitment levels (processed / confirmed / finalized), blockhash lifetime, and reorg handling
• Hands-on experience with low-latency Solana execution / trading bots — landing transactions competitively (same-slot / “block-0”), priority fees, and MEV-aware submission
• Experience with real-time Solana data streaming: Yellowstone gRPC (Triton Dragon’s Mouth / Helius LaserStream) and/or shred-level feeds such as Jito ShredStream (awareness of DoubleZero Edge a plus)
• Experience with transaction submission & landing infrastructure: Jito (Block Engine / bundles / tips), Helius Sender, SWQoS (stake-weighted QoS), and specialist senders (0slot / Nozomi / bloXroute)
• Experience with blockchain data / RPC providers such as Helius, Triton, QuickNode, Alchemy, or similar, including multi-provider failover and rate-limit handling
• Familiarity with Pump.fun / PumpSwap: bonding-curve mechanics, AMM pricing, and building instructions from an on-chain IDL
• Understanding of trading metrics: entry/exit, market cap, slippage, hit rate, P&L, and per-position / portfolio risk
• Experience with crypto trading platforms, copy-trading systems, DEX / on-chain execution, or wallet automation
• Experience with secure key management at scale (HD wallet derivation, in-memory signing, secrets isolation) and capital-isolation / fail-safe design
• Experience with trading systems, bots, DeFi or high-throughput financial systems strongly preferred.

Would Be Great

• Experience writing performance-critical services in Rust (a native signing / execution hot-path is on the roadmap)
• Experience running leader-proximate bare-metal / colocation (Frankfurt / Amsterdam) and host/network tuning for latency
• Experience with Jito bundles, durable nonces, and transaction idempotency / reconciliation against chain
• Experience integrating CEX withdrawal APIs (Binance / MEXC / KuCoin) for programmatic funding
• Experience with observability tools such as Prometheus, Grafana, Datadog, Sentry, ELK, OpenTelemetry, or similar
• Experience designing systems with fallback providers, retry logic, throttling, circuit breakers, and API-usage monitoring
• Experience building HFT / MEV / market-making or other latency-sensitive financial systems

Responsibilities

• Build and maintain full-stack features for ARES, a private copy-trading bot for the Pump.fun / Solana ecosystem
• Design and implement the block-0 execution engine: real-time target detection, pre-trade gating, and same-slot buy submission across multiple routes
• Integrate low-latency detection (Yellowstone gRPC / Jito ShredStream) and submission (Helius Sender / Jito bundles / SWQoS / specialist senders) with multi-provider failover
• Build the wallet lifecycle & custody layer: provisioning isolated child-wallet pairs per task, funding, profit skimming, and drain-to-vault — under strict capital isolation
• Implement position & exit management (rule-driven take-profit, sell-after-inactivity, chase-sells) and the per-task kill-switch / risk protection
• Implement idempotency, durable intent, and crash / reorg reconciliation so no trade is ever double-executed at scale
• Build the operator dashboard (React): copy-task configuration, live task & health monitoring, controls (pause / resume / kill), and global safety limits
• Construct Pump.fun bonding-curve buys from the live IDL, with graduation gating and pre-trade safety checks
• Design controlled concurrency, batching, throttling, retries, and rate-limit handling to sustain 1,000+ tasks / ~2,000+ wallets
• Optimize the detect → decide → sign → submit → land path to maximize block-0 landing rate (KPI #1) and uptime / failover (KPI #2)
• Implement secure key management (HD derivation, in-memory signing) and secrets handling; enforce fail-safe defaults and an explicit kill switch on every execution path
• Collaborate with product, engineering, and domain stakeholders on trade-offs across latency, cost, and reliability; participate in architecture discussions
• Write clean, secure, maintainable, well-tested code (unit + e2e); conduct code reviews; maintain documentation; support production readiness
• Monitor system reliability, execution latency and landing rate, provider health, and data quality

English Level

Upper-Intermediate or higher

About the role
We're looking for a backend engineer to own the sports product within our ecosystem. You will build and maintain our integration with Odds88 and act as the go-to person for anything related to sports across the company.

What you'll do

• Own the backend integration with Odds88 (https://docs.odds88.io), from design to production support
• Be the point of contact for questions about the sports product
• Work closely with the product team and our tech lead to understand requirements and design clean, scalable architecture
• Build internal sports functionality beyond the integration: sports bonuses, bet slip, backoffice tools, and more
• Keep the integration reliable and well monitored, and handle odds, markets, and bet settlement edge cases

What we're looking for

• Strong backend engineering experience, ideally with integrations of third-party APIs and data feeds
• Prior experience with Odds88 or similar sports betting platforms (strongly preferred)
• Ability to take full ownership of a product area and work independently
• Clear communication with product and technical stakeholders
• Good written and spoken English

Nice to have

• Experience with real-time data (odds feeds, WebSockets, event-driven systems)
• Background in iGaming or betting products (bonuses, bet slips, backoffice)

Details

• Full-time, long-term position